Giant versus small porphyry copper deposits of Cenozoic age in northern Chile: adakitic versus normal calc-alkaline magmatism

Late Cretaceous (ca. 90Ma) adakitic intrusive rocks in the Kelu area, Gangdese Belt (southern Tibet): Slab melting and implications for Cu–Au mineralization

“…Reich et al, 2003;Cooke et al, 2005;Wang et al, 2006aWang et al, ,b, 2007cRichards and Kerrich, 2007;Chiaradia et al, 2009;Liu et al, 2010a,b;Sun et al, 2010;Tang et al, 2010). The three largest super-giant porphyry Cu-Au deposits in the world, i.e., the E1 Teniente, Chuquicamata and Río Blanco-Los Bronces deposits, all occur in the central Andes arc and are considered by many workers to have been related to the adakites derived by partial melting of subducted oceanic crust (Skewes and Stern, 1994;Oyarzun et al, 2001;Reich et al, 2003;Cooke et al, 2005). Subduction zones have been considered as uniquely favorable tectonic settings for the generation of Cu-Au deposits (Oyarzun et al, 2001;Defant et al, 2002;Reich et al, 2003).…”

“…The three largest super-giant porphyry Cu-Au deposits in the world, i.e., the E1 Teniente, Chuquicamata and Río Blanco-Los Bronces deposits, all occur in the central Andes arc and are considered by many workers to have been related to the adakites derived by partial melting of subducted oceanic crust (Skewes and Stern, 1994;Oyarzun et al, 2001;Reich et al, 2003;Cooke et al, 2005). Subduction zones have been considered as uniquely favorable tectonic settings for the generation of Cu-Au deposits (Oyarzun et al, 2001;Defant et al, 2002;Reich et al, 2003). The upper part of subducted oceanic crust has very high intrinsic fO 2 due to equilibration with seawater during hydrothermal alteration and the deposition of terrigenous sediments (Mungall, 2002).…”

“…Subduction zones have been considered as a uniquely favorable tectonic setting for the generation of Cu-Au deposits (Oyarzun et al, 2001;Defant et al, 2002;Mungall, 2002;Reich et al, 2003;Cooke et al, 2005;Sun et al, 2010). Most known porphyry/hydrothermal Cu-Au deposits in the world occur in subduction zones or arc settings (Sajona et al, 1993;Skewes and Stern, 1994;Akira, 2002;González-Partida et al, 2003;Reich et al, 2003;Cooke et al, 2005;Richards and Kerrich, 2007;Sun et al, 2010;Tang et al, 2010).…”

“…Most known porphyry/hydrothermal Cu-Au deposits in the world occur in subduction zones or arc settings (Sajona et al, 1993;Skewes and Stern, 1994;Akira, 2002;González-Partida et al, 2003;Reich et al, 2003;Cooke et al, 2005;Richards and Kerrich, 2007;Sun et al, 2010;Tang et al, 2010). These include super-giant porphyry CuAu deposits such as the E1 Teniente, Chuquicamata and Río Blanco-Los Bronces deposits in the Andes arc related to the subduction of oceanic crust or ridges (Skewes and Stern, 1994;Oyarzun et al, 2001;Reich et al, 2003;Cooke et al, 2005).…”

The formation of Qulong adakites and their relationship with porphyry copper deposit: Geochemical constraints

“…Considering that porphyry Cu deposits are usually closely associated with adakites (Ling et al, 2009(Ling et al, , 2013bOyarzun et al, 2001;Sun et al, 2011Sun et al, , 2013, it is very important to study the origin and relationship of adakites with the Gangdese porphyry copper deposits.…”